600 East 4th Street • Chaska, MN 55318 • (952) 361-1500      
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Refer a Child or Adult for Developmental Disability Services

Services for the Developmentally Disabled


Purpose:  To protect and serve children and adults who have been diagnosed with mental retardation or a related condition. 

Person with mental retardation means a person who has been diagnosed as having substantial limitations in present functioning, manifested as significantly subaverage intellectual functioning (generally an IQ of 70 or below), existing concurrently with demonstrated deficits in adaptive behavior, and who manifests these conditions before the person's 22nd birthday. 

A "related condition" is a condition that is found to be closely related to mental retardation, including, but not limited to, cerebral palsy, epilepsy, autism, and Prader-Willi syndrome and that meets all of the following criteria:

  1. Is severe and chronic;
  2. Results in impairment of general intellectual functioning or adaptive behavior similar to that of persons with mental retardation;
  3. Requires treatment or services similar to those required for persons with mental retardation;
  4. Is manifested before the person reaches 22 years of age;
  5. Is likely to continue indefinitely;
  6. Results in substantial functional limitations in three or more of the following areas of major life activity:
    • Self-care
    • Understanding and use of language
    • Learning
    • Mobility
    • Self-direction
    • Capacity for independent living; and
    • Is not attributable to mental illness, or an emotional disturbance.

Authority:  Minnesota Statute 245B, Services to the Mentally Retarded. 

Referral Procedures for DD Case Management

  1. A parent or guardian can contact the Developmental Disabilities unit directly at (952) 361-1999, or walk into the Human Services Building at 602 East 4th Street in Chaska between 8:00 am to 4:30 pm, Monday through Friday and make a request for DD case management services.
  2. Other community professionals can refer children or adults for DD case management services by discussing the proposed referral with the child's parent(s)/guardian(s), obtaining a signed consent for the release of information, and sending a copy of the signed release form and a written statement that contains identifying information, recognized concerns, and recommendations for services to Social Services DD Intake, 602 East 4th Street, Chaska, MN  55318-2191, or by fax to (952) 361-1660.   

Developmental Disabilities Eligibility Assessment

  1. Upon receipt of the referral or contact from the parent/guardian, intake information will be sent to the parent/guardian to complete, and a social worker will be assigned to collect information about diagnosis and eligibility. 
  2. The social worker will provide a HIPPA notice, complete an application for services, collect other appropriate eligibility information, and enter intake information into SSIS.
  3. If the materials fail to document the need for or eligibility for DD case management services, the supervisor will notify the family in writing of the denial of services, citing the statute and rules that pertain to the requested services.